Luid-straining apparatus



1927. 1,627,186 May 3 J. D LALoR FLUID STRAINING APPARATUS Filed Feb. 18, 1925 2 sheets-sheet 1 |||y (IW Q 15 A lll y J. D. LALoR FLUID STRAINING APPARATUS 2 Sheets-Sheet 2 IN1/Ewan:

Y diz/Ines l). Lalor,

l BY fw TTORNEYS. l

W1 TNESSES Patented May 3, 1927A.

STATI-'is PATENT OFFICE.'

:Anl D. f m0, mm, ASSIGNB TO THE LALOB FUEL OIL QI BALTIIOBE, MARYLAND, A CORPORATION 0F m2- fLum-s'i'aamme anuncios.

'anuncian ma rami-y ia, im. mini 110.10941.

This invention relates to straining apparatus,more particularly to a type inten ed for continuousv o ration 1n s training a steady ilow of ilui and embodying a number of component straining units capable of interchangeable use t0 permit substitution of one for `another temporarily incapacitated after continued service throughcloging. Such an apparatus is useful in oil urnin systems, and especially as a second or iina straining means 1n association with filtering apparatus ofthe kind shown and described 1n .p my copending application Serial No.` 10,046 filed simultaneously herewith, to insure removal of ang very small particles of solid or congeale matter not previousllyf'hcaughtl in the primary filtering v means. e observance of this final precaution is absolutely essential in oil burning l systems employing high pressure burners with exceedingl minute spray .discharge orifices, to rec ude the possibility of the latter becoming choked.

` The main oblects of my present invention u areto provide in connection with apparatus of the character above referred to,- straining units that are simple in construction; absolutely reliable in operation; of ample sturdiness to withstand fluid ow at high preseures'l land capable of being easily and quickly disassembled for cleaning and replacement of the vfiltering material as required from time to time.

Other objects and advan will be readil a arent from the detailed description hereiiiafter of the typical embodiment invention shown in the drawings.

of m y I is a plan view with certainppor- Fig. ltions in section. 4 Fig. II is a vertical elevation with one of the straining units in section.

Fig. III is a. sectional view taken as indicated by the arrows III-III in Fig.' I. Fi IV is a plan section taken as indicateg by the, arrowls IV-IV 1:11 the immediatel recedin e ovation' an l Figs is a eg tive view of the frame tering element.

illustration of the remova le.

The organization chosen for 5 herein is characterized by two inde dent component straining umts 10; an since these units are exact counterparts of one another, it will be more convenient, for the sake of brevity, to refer to them in the singular lfor the time being in the following description. As shown, each unit 10 comprises 'a vertical cylindric casing-11 which is closed at the bottom, and formed about its open top with a projecting headilange 12 for placement of a detachable cover 13. For greater rigidity, this -cover 13 is centrally domed or archedA as at 14, and otherwise strengthened by a circular ridge 15 that )oins a series of bosses 16 pierced for pas' sage of lstud bolts 17 pro ecting upward from the head flange 12 ci the casing 11. Nuts 18 engaging the bolts 17 function to clamp the cover 13 in lace; while a conipressible gasket 19 is interposed to insure a iluid-tigght juncture between the casing parts. The uid being strained is introduced into the flow chamber 11 within the casin 11, throu h a port 20 near the top, and ischarges t roughv a port 21 nearthe bottom` and at the opposite side of said chamber. d

Disposed in the fluid flow within the chamber ll, intermediate the inlet 20 and outlet 21, is a straining element 22 describable, in a general way, as being of basket-` skeletonized frame, (see Fig. V) with top and bottomv rings 24, 25 united at circumferential intervals by integral verticals 26,

one of which, designated 26,, beingperforated along opposite side edges for a purpose to be presently explained. The'upper or larger ring 24 is in screw-threaded enga ment with the cas' at 27 and has `a peripheral ilange 28, whic in the assemblage, seats or rests upon lan internal circumferential shoulder 29 in said casin `lo cated at a level somewhat below the inlet port 20, see Fig-III. The member 23 has a foraminous linin 30, and is provided Ywith a bottom 31 of l e material. The lining 30 is preferabl constructed from flat sheet metal, the bla being cut to such length as to predetermine, when bent to form, a linder of the proper diameter with the en of the sheet a uttin as in Fig. IV. Inassembling, the line o abutment is brought into registry with the` medial ofthe perforated vertical'26i`of the member 23, a strip 32V superposed tor-lap the joint, whereupon the parts are rigidly secured by rivets -or other securing means 33' in accordance with the disclosure in the illustration last referred to. A ring 34 is employed to secure' theibottom 31 in anidentical manner, as best shown in Fig. III. By this construction, I provide a substantial backing capable of bracm and thus protecting an -inner lining 35 of ely woven filtering fabric against the pressure of the fluid ow which is maintained in the direction indicated b the arrows in Fig. III. The lining 35 is pre erably made in the form of a bag with a reinforcing bead 36 formed about its mouth by incorporation of a metallic hoop see Fig. II,- said bead being accom-I' modated in a circular groove or seat 37 in the top 'face-of the flange 28 of themember 23.' The bag 35 is held. in place by a retaining annulus 38 with a depending circumferential lip' 39 that laps a considerable internal margin of the bag mouth, and said bag isin partr-sup orted in spacial relation relative to the oraminous lining bottom 31 by the ring 34 to revent clogging sediment'. Any convenient fastening means such as :cap bolts l 40 maybe employed t0 Securely clamp the retaining annulus 38 tightly in place over the bead 36 around the bag mouth. For convenience and ease in removing the straining element as a whole from the easing 10, A

the annulus 38 is provided with a diametral bar 41 designed to serve as a hand grasp.

Assuming the operation of theflter units 10 to be obvious from the foregoing, I will .,v now proceed to describe the manner inwhich they are ouped in the organization to permit of t eir being interchangeably used; or, in otherwords, that the system in which the ap aratus is interposed can 'be continuous y operated by running the How .through one-vof said units while the other is being cleaned or its inner lining replaced as may be required from time to time. Ac-

' cordingly, the inlets 20 -and outlets 21 of the umts are coordinated by common manifolds 42, 43vwhich are in turn connected to flow mains 44, 45. Angle valves l46 serge in the present instance as couplings between the inlets 2O and outlets' 21 and the manifolds 42, 43, as well as the means forv individually cutting in or cutting out the units 10 in a manner that will at once be apparent Ytothose schooled in. the operation of apacterized' -by component interchan Y claim:

paratus of the class to which the present invention belon Y Having thus described lmy invention, I

Y1. A fluid strainingV apparatus chtr 1e units each' comprising a casing afor va flow chamber for the fluid, and a straining element in the form of a foraminous basket disposed iii the -fluid flow in the chamber,l said straining element embodying a removable inner lining of textile fabric with its "bottoni in spaced relation to that of the basket to prevent clogging of the latter by collected-matter, and said straining element having screw connection with the casing so as to be readily removable therefrom.

2. A duid straining apparatus characterized by component interchangeable units each comprising a casing affording a flow 'chamber for the fluid, and aremovable strainer element disposed in thefluid flow within the chamber having the form of a foraminous basket with a securing the bottom thereof functional to hold the wall expanded, and including a separatelyrelnovable lining bag of textile fabric with a reinforcing-bead about itsmouth adapted to be secured around the openiner of the basket and the bottom of said lming'bag-in' partseating onthe securing ring whereby cloggin of the foraminous basket bottom with COE lected matter is prevented.

3. A Huid straining ap aratus characterize'd by component intere angeable units each comprisin a casing aiording a flow chamber for t e fluid, and a removable straining element dis sedin the fluid flow within the chamber liiiving Athe form ofA-a foraminous basket, and ineludin a sepa-4 rately-removable lining bag of textile fabric ring' in with a reinforcing bead about its mouthv 4. A fluid straining apparatus charactcrized by component interchangeable .units each comprising a casing allordin a flow chamber for the- Huid, in combination with a strainer element in the form of a foram-A inous basket having a securing ring within its lower part and a removable inner lof. textile fabric disposed intermediate inlety andoutlet ports at'the top and bottom of the casin said lining bein supported in spaeial re ation relative to t e basket bottom by the securingring-aforesaid to revent`L clogging ofthe latter with strained' matter. a-.

5. A fluid straining apparatus chancterized by component units each comprising a vertical cylindric casing a'ording a flow chamber for the fluid, said casing having a detachable cover and being formed near .the top with a circumferential internal shoulder, in combination with a. straining element in the form of a basket including a skeletonized outer member screwed, 'tol enable Aremoval of the element, into the casing and formed about its top with a Ylateral peripheral ange adapted to seat upon the circumferential shoulder aforementioned, a f oraminou`s sheetmetal lining secured within the skoletonized 'member, a separately-removable inner lining bag for the basket of textile fabric with a reinforcin bead about the mouth thereof adapted to received in u' circumferential groove around the top of the skeletonized member, und a detachable annulus to clamp the bead in its groove,

said annulus being formed with a diametral bar serviceable as a grasp in removing the straining element from the casing.

In testimony whereof, vI have hereunto signed my name at Philadelphia, Pennsylvania, this 13th day of February, 1925.

JAMES D. LALOR. 

